Granted Patent
Utility
US 5,437,266 · App. 07/909,223
Coil screw surgical retractor
Inventors:
William E. McPherson, William B. Saye, Eddie J. Reddick
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Jul 2, 1992
Inventors
William E. McPherson
William B. Saye
Eddie J. Reddick
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.